Finding the Third Proportional to 518,323,561,736 and 807,789,347,436

Step by Step Solution

1. Step 1: Write the proportion equation
   518,323,561,736 : 807,789,347,436 = 807,789,347,436 : x
2. Step 2: Convert to fraction form
   518,323,561,736/807,789,347,436 = 807,789,347,436/x
3. Step 3: Cross multiply
   518,323,561,736x = 807,789,347,436 × 807,789,347,436
4. Step 4: Simplify right side
   518,323,561,736x = 652,523,629,831,078,780,338,176
5. Step 5: Solve for x
   x = 652,523,629,831,078,780,338,176/518,323,561,736
6. Step 6: Final answer
   x = 1,258,911,764,777.99