Finding the Third Proportional to 405,531,986 and 832,562,404

Step by Step Solution

1. Step 1: Write the proportion equation
   405,531,986 : 832,562,404 = 832,562,404 : x
2. Step 2: Convert to fraction form
   405,531,986/832,562,404 = 832,562,404/x
3. Step 3: Cross multiply
   405,531,986x = 832,562,404 × 832,562,404
4. Step 4: Simplify right side
   405,531,986x = 693,160,156,554,259,200
5. Step 5: Solve for x
   x = 693,160,156,554,259,200/405,531,986
6. Step 6: Final answer
   x = 1,709,261,366.51