Finding the Third Proportional to 137,404.50 and 218,574

Step by Step Solution

1. Step 1: Write the proportion equation
   137,404.50 : 218,574 = 218,574 : x
2. Step 2: Convert to fraction form
   137,404.50/218,574 = 218,574/x
3. Step 3: Cross multiply
   137,404.50x = 218,574 × 218,574
4. Step 4: Simplify right side
   137,404.50x = 47,774,593,476
5. Step 5: Solve for x
   x = 47,774,593,476/137,404.50
6. Step 6: Final answer
   x = 347,693.08