Finding the Third Proportional to 121,074 and 239,038.50

Step by Step Solution

1. Step 1: Write the proportion equation
   121,074 : 239,038.50 = 239,038.50 : x
2. Step 2: Convert to fraction form
   121,074/239,038.50 = 239,038.50/x
3. Step 3: Cross multiply
   121,074x = 239,038.50 × 239,038.50
4. Step 4: Simplify right side
   121,074x = 57,139,404,482.25
5. Step 5: Solve for x
   x = 57,139,404,482.25/121,074
6. Step 6: Final answer
   x = 471,937.86