Finding the Third Proportional to 70,120 and 108,781.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,120 : 108,781.50 = 108,781.50 : x
2. Step 2: Convert to fraction form
   70,120/108,781.50 = 108,781.50/x
3. Step 3: Cross multiply
   70,120x = 108,781.50 × 108,781.50
4. Step 4: Simplify right side
   70,120x = 11,833,414,742.25
5. Step 5: Solve for x
   x = 11,833,414,742.25/70,120
6. Step 6: Final answer
   x = 168,759.48