Finding the Third Proportional to 68,991 and 101,215.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,991 : 101,215.50 = 101,215.50 : x
2. Step 2: Convert to fraction form
   68,991/101,215.50 = 101,215.50/x
3. Step 3: Cross multiply
   68,991x = 101,215.50 × 101,215.50
4. Step 4: Simplify right side
   68,991x = 10,244,577,440.25
5. Step 5: Solve for x
   x = 10,244,577,440.25/68,991
6. Step 6: Final answer
   x = 148,491.51