Finding the Third Proportional to 131,799 and 310,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,799 : 310,978.50 = 310,978.50 : x
2. Step 2: Convert to fraction form
   131,799/310,978.50 = 310,978.50/x
3. Step 3: Cross multiply
   131,799x = 310,978.50 × 310,978.50
4. Step 4: Simplify right side
   131,799x = 96,707,627,462.25
5. Step 5: Solve for x
   x = 96,707,627,462.25/131,799
6. Step 6: Final answer
   x = 733,750.84