Finding the Third Proportional to 231,025.50 and 354,888

Step by Step Solution

1. Step 1: Write the proportion equation
   231,025.50 : 354,888 = 354,888 : x
2. Step 2: Convert to fraction form
   231,025.50/354,888 = 354,888/x
3. Step 3: Cross multiply
   231,025.50x = 354,888 × 354,888
4. Step 4: Simplify right side
   231,025.50x = 125,945,492,544
5. Step 5: Solve for x
   x = 125,945,492,544/231,025.50
6. Step 6: Final answer
   x = 545,158.40