Finding the Third Proportional to 68,870 and 144,711.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,870 : 144,711.50 = 144,711.50 : x
2. Step 2: Convert to fraction form
   68,870/144,711.50 = 144,711.50/x
3. Step 3: Cross multiply
   68,870x = 144,711.50 × 144,711.50
4. Step 4: Simplify right side
   68,870x = 20,941,418,232.25
5. Step 5: Solve for x
   x = 20,941,418,232.25/68,870
6. Step 6: Final answer
   x = 304,071.70