Finding the Third Proportional to 153,390 and 235,440.75

Step by Step Solution

1. Step 1: Write the proportion equation
   153,390 : 235,440.75 = 235,440.75 : x
2. Step 2: Convert to fraction form
   153,390/235,440.75 = 235,440.75/x
3. Step 3: Cross multiply
   153,390x = 235,440.75 × 235,440.75
4. Step 4: Simplify right side
   153,390x = 55,432,346,760.56
5. Step 5: Solve for x
   x = 55,432,346,760.56/153,390
6. Step 6: Final answer
   x = 361,381.75