Finding the Third Proportional to 67,915.13 and 147,517.31

Step by Step Solution

1. Step 1: Write the proportion equation
   67,915.13 : 147,517.31 = 147,517.31 : x
2. Step 2: Convert to fraction form
   67,915.13/147,517.31 = 147,517.31/x
3. Step 3: Cross multiply
   67,915.13x = 147,517.31 × 147,517.31
4. Step 4: Simplify right side
   67,915.13x = 21,761,357,487.22
5. Step 5: Solve for x
   x = 21,761,357,487.22/67,915.13
6. Step 6: Final answer
   x = 320,419.90