Finding the Third Proportional to 78,603 and 111,114.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,603 : 111,114.50 = 111,114.50 : x
2. Step 2: Convert to fraction form
   78,603/111,114.50 = 111,114.50/x
3. Step 3: Cross multiply
   78,603x = 111,114.50 × 111,114.50
4. Step 4: Simplify right side
   78,603x = 12,346,432,110.25
5. Step 5: Solve for x
   x = 12,346,432,110.25/78,603
6. Step 6: Final answer
   x = 157,073.29