Finding the Third Proportional to 70,864 and 109,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,864 : 109,719.50 = 109,719.50 : x
2. Step 2: Convert to fraction form
   70,864/109,719.50 = 109,719.50/x
3. Step 3: Cross multiply
   70,864x = 109,719.50 × 109,719.50
4. Step 4: Simplify right side
   70,864x = 12,038,368,680.25
5. Step 5: Solve for x
   x = 12,038,368,680.25/70,864
6. Step 6: Final answer
   x = 169,879.89