Finding the Third Proportional to 361,345.50 and 763,389

Step by Step Solution

1. Step 1: Write the proportion equation
   361,345.50 : 763,389 = 763,389 : x
2. Step 2: Convert to fraction form
   361,345.50/763,389 = 763,389/x
3. Step 3: Cross multiply
   361,345.50x = 763,389 × 763,389
4. Step 4: Simplify right side
   361,345.50x = 582,762,765,321
5. Step 5: Solve for x
   x = 582,762,765,321/361,345.50
6. Step 6: Final answer
   x = 1,612,757.78