Finding the Third Proportional to 68,200.25 and 148,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,200.25 : 148,064.50 = 148,064.50 : x
2. Step 2: Convert to fraction form
   68,200.25/148,064.50 = 148,064.50/x
3. Step 3: Cross multiply
   68,200.25x = 148,064.50 × 148,064.50
4. Step 4: Simplify right side
   68,200.25x = 21,923,096,160.25
5. Step 5: Solve for x
   x = 21,923,096,160.25/68,200.25
6. Step 6: Final answer
   x = 321,451.84