Finding the Third Proportional to 55,181.25 and 87,437.25

Step by Step Solution

1. Step 1: Write the proportion equation
   55,181.25 : 87,437.25 = 87,437.25 : x
2. Step 2: Convert to fraction form
   55,181.25/87,437.25 = 87,437.25/x
3. Step 3: Cross multiply
   55,181.25x = 87,437.25 × 87,437.25
4. Step 4: Simplify right side
   55,181.25x = 7,645,272,687.56
5. Step 5: Solve for x
   x = 7,645,272,687.56/55,181.25
6. Step 6: Final answer
   x = 138,548.38