Finding the Third Proportional to 34,342.31 and 72,425.81

Step by Step Solution

1. Step 1: Write the proportion equation
   34,342.31 : 72,425.81 = 72,425.81 : x
2. Step 2: Convert to fraction form
   34,342.31/72,425.81 = 72,425.81/x
3. Step 3: Cross multiply
   34,342.31x = 72,425.81 × 72,425.81
4. Step 4: Simplify right side
   34,342.31x = 5,245,498,316.29
5. Step 5: Solve for x
   x = 5,245,498,316.29/34,342.31
6. Step 6: Final answer
   x = 152,741.56