Finding the Third Proportional to 53,947.50 and 81,670.88

Step by Step Solution

1. Step 1: Write the proportion equation
   53,947.50 : 81,670.88 = 81,670.88 : x
2. Step 2: Convert to fraction form
   53,947.50/81,670.88 = 81,670.88/x
3. Step 3: Cross multiply
   53,947.50x = 81,670.88 × 81,670.88
4. Step 4: Simplify right side
   53,947.50x = 6,670,131,823.27
5. Step 5: Solve for x
   x = 6,670,131,823.27/53,947.50
6. Step 6: Final answer
   x = 123,641.17