Finding the Third Proportional to 231,300 and 357,454

Step by Step Solution

1. Step 1: Write the proportion equation
   231,300 : 357,454 = 357,454 : x
2. Step 2: Convert to fraction form
   231,300/357,454 = 357,454/x
3. Step 3: Cross multiply
   231,300x = 357,454 × 357,454
4. Step 4: Simplify right side
   231,300x = 127,773,362,116
5. Step 5: Solve for x
   x = 127,773,362,116/231,300
6. Step 6: Final answer
   x = 552,414.02