Finding the Third Proportional to 153,867.75 and 243,438

Step by Step Solution

1. Step 1: Write the proportion equation
   153,867.75 : 243,438 = 243,438 : x
2. Step 2: Convert to fraction form
   153,867.75/243,438 = 243,438/x
3. Step 3: Cross multiply
   153,867.75x = 243,438 × 243,438
4. Step 4: Simplify right side
   153,867.75x = 59,262,059,844
5. Step 5: Solve for x
   x = 59,262,059,844/153,867.75
6. Step 6: Final answer
   x = 385,149.32