Finding the Third Proportional to 137,620.50 and 212,694

Step by Step Solution

1. Step 1: Write the proportion equation
   137,620.50 : 212,694 = 212,694 : x
2. Step 2: Convert to fraction form
   137,620.50/212,694 = 212,694/x
3. Step 3: Cross multiply
   137,620.50x = 212,694 × 212,694
4. Step 4: Simplify right side
   137,620.50x = 45,238,737,636
5. Step 5: Solve for x
   x = 45,238,737,636/137,620.50
6. Step 6: Final answer
   x = 328,720.92