Finding the Third Proportional to 77,116.13 and 105,057.38

Step by Step Solution

1. Step 1: Write the proportion equation
   77,116.13 : 105,057.38 = 105,057.38 : x
2. Step 2: Convert to fraction form
   77,116.13/105,057.38 = 105,057.38/x
3. Step 3: Cross multiply
   77,116.13x = 105,057.38 × 105,057.38
4. Step 4: Simplify right side
   77,116.13x = 11,037,052,041.89
5. Step 5: Solve for x
   x = 11,037,052,041.89/77,116.13
6. Step 6: Final answer
   x = 143,122.49