Finding the Third Proportional to 57,155.63 and 86,872.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,155.63 : 86,872.50 = 86,872.50 : x
2. Step 2: Convert to fraction form
   57,155.63/86,872.50 = 86,872.50/x
3. Step 3: Cross multiply
   57,155.63x = 86,872.50 × 86,872.50
4. Step 4: Simplify right side
   57,155.63x = 7,546,831,256.25
5. Step 5: Solve for x
   x = 7,546,831,256.25/57,155.63
6. Step 6: Final answer
   x = 132,040.04