Finding the Third Proportional to 68,914.50 and 148,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,914.50 : 148,387.50 = 148,387.50 : x
2. Step 2: Convert to fraction form
   68,914.50/148,387.50 = 148,387.50/x
3. Step 3: Cross multiply
   68,914.50x = 148,387.50 × 148,387.50
4. Step 4: Simplify right side
   68,914.50x = 22,018,850,156.25
5. Step 5: Solve for x
   x = 22,018,850,156.25/68,914.50
6. Step 6: Final answer
   x = 319,509.68