Finding the Third Proportional to 230,790 and 349,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   230,790 : 349,258.50 = 349,258.50 : x
2. Step 2: Convert to fraction form
   230,790/349,258.50 = 349,258.50/x
3. Step 3: Cross multiply
   230,790x = 349,258.50 × 349,258.50
4. Step 4: Simplify right side
   230,790x = 121,981,499,822.25
5. Step 5: Solve for x
   x = 121,981,499,822.25/230,790
6. Step 6: Final answer
   x = 528,538.93