Finding the Third Proportional to 155,454 and 243,589.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,454 : 243,589.50 = 243,589.50 : x
2. Step 2: Convert to fraction form
   155,454/243,589.50 = 243,589.50/x
3. Step 3: Cross multiply
   155,454x = 243,589.50 × 243,589.50
4. Step 4: Simplify right side
   155,454x = 59,335,844,510.25
5. Step 5: Solve for x
   x = 59,335,844,510.25/155,454
6. Step 6: Final answer
   x = 381,693.91