Finding the Third Proportional to 56,778.47 and 77,143.01

Step by Step Solution

1. Step 1: Write the proportion equation
   56,778.47 : 77,143.01 = 77,143.01 : x
2. Step 2: Convert to fraction form
   56,778.47/77,143.01 = 77,143.01/x
3. Step 3: Cross multiply
   56,778.47x = 77,143.01 × 77,143.01
4. Step 4: Simplify right side
   56,778.47x = 5,951,043,654.36
5. Step 5: Solve for x
   x = 5,951,043,654.36/56,778.47
6. Step 6: Final answer
   x = 104,811.63