Finding the Third Proportional to 53,379 and 81,877.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,379 : 81,877.50 = 81,877.50 : x
2. Step 2: Convert to fraction form
   53,379/81,877.50 = 81,877.50/x
3. Step 3: Cross multiply
   53,379x = 81,877.50 × 81,877.50
4. Step 4: Simplify right side
   53,379x = 6,703,925,006.25
5. Step 5: Solve for x
   x = 6,703,925,006.25/53,379
6. Step 6: Final answer
   x = 125,591.06