Finding the Third Proportional to 149,490 and 231,707.25

Step by Step Solution

1. Step 1: Write the proportion equation
   149,490 : 231,707.25 = 231,707.25 : x
2. Step 2: Convert to fraction form
   149,490/231,707.25 = 231,707.25/x
3. Step 3: Cross multiply
   149,490x = 231,707.25 × 231,707.25
4. Step 4: Simplify right side
   149,490x = 53,688,249,702.56
5. Step 5: Solve for x
   x = 53,688,249,702.56/149,490
6. Step 6: Final answer
   x = 359,142.75