Finding the Third Proportional to 140,748 and 207,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,748 : 207,400.50 = 207,400.50 : x
2. Step 2: Convert to fraction form
   140,748/207,400.50 = 207,400.50/x
3. Step 3: Cross multiply
   140,748x = 207,400.50 × 207,400.50
4. Step 4: Simplify right side
   140,748x = 43,014,967,400.25
5. Step 5: Solve for x
   x = 43,014,967,400.25/140,748
6. Step 6: Final answer
   x = 305,616.90