Finding the Third Proportional to 137,401.50 and 218,570.25

Step by Step Solution

1. Step 1: Write the proportion equation
   137,401.50 : 218,570.25 = 218,570.25 : x
2. Step 2: Convert to fraction form
   137,401.50/218,570.25 = 218,570.25/x
3. Step 3: Cross multiply
   137,401.50x = 218,570.25 × 218,570.25
4. Step 4: Simplify right side
   137,401.50x = 47,772,954,185.06
5. Step 5: Solve for x
   x = 47,772,954,185.06/137,401.50
6. Step 6: Final answer
   x = 347,688.74