Finding the Third Proportional to 53,946.88 and 81,670.06

Step by Step Solution

1. Step 1: Write the proportion equation
   53,946.88 : 81,670.06 = 81,670.06 : x
2. Step 2: Convert to fraction form
   53,946.88/81,670.06 = 81,670.06/x
3. Step 3: Cross multiply
   53,946.88x = 81,670.06 × 81,670.06
4. Step 4: Simplify right side
   53,946.88x = 6,669,999,108.75
5. Step 5: Solve for x
   x = 6,669,999,108.75/53,946.88
6. Step 6: Final answer
   x = 123,640.14