Finding the Third Proportional to 78,608.25 and 111,123.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,608.25 : 111,123.56 = 111,123.56 : x
2. Step 2: Convert to fraction form
   78,608.25/111,123.56 = 111,123.56/x
3. Step 3: Cross multiply
   78,608.25x = 111,123.56 × 111,123.56
4. Step 4: Simplify right side
   78,608.25x = 12,348,446,142.69
5. Step 5: Solve for x
   x = 12,348,446,142.69/78,608.25
6. Step 6: Final answer
   x = 157,088.42