Finding the Third Proportional to 138,700.50 and 203,112

Step by Step Solution

1. Step 1: Write the proportion equation
   138,700.50 : 203,112 = 203,112 : x
2. Step 2: Convert to fraction form
   138,700.50/203,112 = 203,112/x
3. Step 3: Cross multiply
   138,700.50x = 203,112 × 203,112
4. Step 4: Simplify right side
   138,700.50x = 41,254,484,544
5. Step 5: Solve for x
   x = 41,254,484,544/138,700.50
6. Step 6: Final answer
   x = 297,435.73