Finding the Third Proportional to 121,837.50 and 188,287.88

Step by Step Solution

1. Step 1: Write the proportion equation
   121,837.50 : 188,287.88 = 188,287.88 : x
2. Step 2: Convert to fraction form
   121,837.50/188,287.88 = 188,287.88/x
3. Step 3: Cross multiply
   121,837.50x = 188,287.88 × 188,287.88
4. Step 4: Simplify right side
   121,837.50x = 35,452,323,872.02
5. Step 5: Solve for x
   x = 35,452,323,872.02/121,837.50
6. Step 6: Final answer
   x = 290,980.39