Finding the Third Proportional to 68,990 and 101,213.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,990 : 101,213.50 = 101,213.50 : x
2. Step 2: Convert to fraction form
   68,990/101,213.50 = 101,213.50/x
3. Step 3: Cross multiply
   68,990x = 101,213.50 × 101,213.50
4. Step 4: Simplify right side
   68,990x = 10,244,172,582.25
5. Step 5: Solve for x
   x = 10,244,172,582.25/68,990
6. Step 6: Final answer
   x = 148,487.79