Finding the Third Proportional to 153,918 and 230,257.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,918 : 230,257.50 = 230,257.50 : x
2. Step 2: Convert to fraction form
   153,918/230,257.50 = 230,257.50/x
3. Step 3: Cross multiply
   153,918x = 230,257.50 × 230,257.50
4. Step 4: Simplify right side
   153,918x = 53,018,516,306.25
5. Step 5: Solve for x
   x = 53,018,516,306.25/153,918
6. Step 6: Final answer
   x = 344,459.49