Finding the Third Proportional to 647,064 and 1,361,040

Step by Step Solution

1. Step 1: Write the proportion equation
   647,064 : 1,361,040 = 1,361,040 : x
2. Step 2: Convert to fraction form
   647,064/1,361,040 = 1,361,040/x
3. Step 3: Cross multiply
   647,064x = 1,361,040 × 1,361,040
4. Step 4: Simplify right side
   647,064x = 1,852,429,881,600
5. Step 5: Solve for x
   x = 1,852,429,881,600/647,064
6. Step 6: Final answer
   x = 2,862,823.28