Finding the Third Proportional to 55,520 and 84,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,520 : 84,662.50 = 84,662.50 : x
2. Step 2: Convert to fraction form
   55,520/84,662.50 = 84,662.50/x
3. Step 3: Cross multiply
   55,520x = 84,662.50 × 84,662.50
4. Step 4: Simplify right side
   55,520x = 7,167,738,906.25
5. Step 5: Solve for x
   x = 7,167,738,906.25/55,520
6. Step 6: Final answer
   x = 129,101.93