Finding the Third Proportional to 349,708.50 and 762,651

Step by Step Solution

1. Step 1: Write the proportion equation
   349,708.50 : 762,651 = 762,651 : x
2. Step 2: Convert to fraction form
   349,708.50/762,651 = 762,651/x
3. Step 3: Cross multiply
   349,708.50x = 762,651 × 762,651
4. Step 4: Simplify right side
   349,708.50x = 581,636,547,801
5. Step 5: Solve for x
   x = 581,636,547,801/349,708.50
6. Step 6: Final answer
   x = 1,663,203.92