Finding the Third Proportional to 405,531,790 and 832,562,025.50

Step by Step Solution

1. Step 1: Write the proportion equation
   405,531,790 : 832,562,025.50 = 832,562,025.50 : x
2. Step 2: Convert to fraction form
   405,531,790/832,562,025.50 = 832,562,025.50/x
3. Step 3: Cross multiply
   405,531,790x = 832,562,025.50 × 832,562,025.50
4. Step 4: Simplify right side
   405,531,790x = 693,159,526,304,662,656
5. Step 5: Solve for x
   x = 693,159,526,304,662,656/405,531,790
6. Step 6: Final answer
   x = 1,709,260,638.49