Finding the Third Proportional to 56,143.13 and 84,796.31

Step by Step Solution

1. Step 1: Write the proportion equation
   56,143.13 : 84,796.31 = 84,796.31 : x
2. Step 2: Convert to fraction form
   56,143.13/84,796.31 = 84,796.31/x
3. Step 3: Cross multiply
   56,143.13x = 84,796.31 × 84,796.31
4. Step 4: Simplify right side
   56,143.13x = 7,190,414,613.60
5. Step 5: Solve for x
   x = 7,190,414,613.60/56,143.13
6. Step 6: Final answer
   x = 128,072.93