Finding the Third Proportional to 172,691,284.50 and 375,639,796.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,691,284.50 : 375,639,796.50 = 375,639,796.50 : x
2. Step 2: Convert to fraction form
   172,691,284.50/375,639,796.50 = 375,639,796.50/x
3. Step 3: Cross multiply
   172,691,284.50x = 375,639,796.50 × 375,639,796.50
4. Step 4: Simplify right side
   172,691,284.50x = 141,105,256,714,561,408
5. Step 5: Solve for x
   x = 141,105,256,714,561,408/172,691,284.50
6. Step 6: Final answer
   x = 817,095,414.65