Finding the Third Proportional to 55,239.19 and 84,463.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,239.19 : 84,463.50 = 84,463.50 : x
2. Step 2: Convert to fraction form
   55,239.19/84,463.50 = 84,463.50/x
3. Step 3: Cross multiply
   55,239.19x = 84,463.50 × 84,463.50
4. Step 4: Simplify right side
   55,239.19x = 7,134,082,832.25
5. Step 5: Solve for x
   x = 7,134,082,832.25/55,239.19
6. Step 6: Final answer
   x = 129,148.95