Finding the Third Proportional to 60,645.19 and 86,839.31

Step by Step Solution

1. Step 1: Write the proportion equation
   60,645.19 : 86,839.31 = 86,839.31 : x
2. Step 2: Convert to fraction form
   60,645.19/86,839.31 = 86,839.31/x
3. Step 3: Cross multiply
   60,645.19x = 86,839.31 × 86,839.31
4. Step 4: Simplify right side
   60,645.19x = 7,541,066,195.47
5. Step 5: Solve for x
   x = 7,541,066,195.47/60,645.19
6. Step 6: Final answer
   x = 124,347.31