Finding the Third Proportional to 68,458 and 149,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,458 : 149,799.50 = 149,799.50 : x
2. Step 2: Convert to fraction form
   68,458/149,799.50 = 149,799.50/x
3. Step 3: Cross multiply
   68,458x = 149,799.50 × 149,799.50
4. Step 4: Simplify right side
   68,458x = 22,439,890,200.25
5. Step 5: Solve for x
   x = 22,439,890,200.25/68,458
6. Step 6: Final answer
   x = 327,790.62