Finding the Third Proportional to 56,938 and 81,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,938 : 81,109.50 = 81,109.50 : x
2. Step 2: Convert to fraction form
   56,938/81,109.50 = 81,109.50/x
3. Step 3: Cross multiply
   56,938x = 81,109.50 × 81,109.50
4. Step 4: Simplify right side
   56,938x = 6,578,750,990.25
5. Step 5: Solve for x
   x = 6,578,750,990.25/56,938
6. Step 6: Final answer
   x = 115,542.36