Finding the Third Proportional to 63,902.81 and 138,384.56

Step by Step Solution

1. Step 1: Write the proportion equation
   63,902.81 : 138,384.56 = 138,384.56 : x
2. Step 2: Convert to fraction form
   63,902.81/138,384.56 = 138,384.56/x
3. Step 3: Cross multiply
   63,902.81x = 138,384.56 × 138,384.56
4. Step 4: Simplify right side
   63,902.81x = 19,150,287,138.32
5. Step 5: Solve for x
   x = 19,150,287,138.32/63,902.81
6. Step 6: Final answer
   x = 299,678.31