Finding the Third Proportional to 53,490.75 and 82,781.63

Step by Step Solution

1. Step 1: Write the proportion equation
   53,490.75 : 82,781.63 = 82,781.63 : x
2. Step 2: Convert to fraction form
   53,490.75/82,781.63 = 82,781.63/x
3. Step 3: Cross multiply
   53,490.75x = 82,781.63 × 82,781.63
4. Step 4: Simplify right side
   53,490.75x = 6,852,797,437.64
5. Step 5: Solve for x
   x = 6,852,797,437.64/53,490.75
6. Step 6: Final answer
   x = 128,111.82