Finding the Third Proportional to 137,725.50 and 212,816

Step by Step Solution

1. Step 1: Write the proportion equation
   137,725.50 : 212,816 = 212,816 : x
2. Step 2: Convert to fraction form
   137,725.50/212,816 = 212,816/x
3. Step 3: Cross multiply
   137,725.50x = 212,816 × 212,816
4. Step 4: Simplify right side
   137,725.50x = 45,290,649,856
5. Step 5: Solve for x
   x = 45,290,649,856/137,725.50
6. Step 6: Final answer
   x = 328,847.23