Finding the Third Proportional to 149,280 and 231,132

Step by Step Solution

1. Step 1: Write the proportion equation
   149,280 : 231,132 = 231,132 : x
2. Step 2: Convert to fraction form
   149,280/231,132 = 231,132/x
3. Step 3: Cross multiply
   149,280x = 231,132 × 231,132
4. Step 4: Simplify right side
   149,280x = 53,422,001,424
5. Step 5: Solve for x
   x = 53,422,001,424/149,280
6. Step 6: Final answer
   x = 357,864.43