Finding the Third Proportional to 89,148.63 and 138,484

Step by Step Solution

1. Step 1: Write the proportion equation
   89,148.63 : 138,484 = 138,484 : x
2. Step 2: Convert to fraction form
   89,148.63/138,484 = 138,484/x
3. Step 3: Cross multiply
   89,148.63x = 138,484 × 138,484
4. Step 4: Simplify right side
   89,148.63x = 19,177,818,256
5. Step 5: Solve for x
   x = 19,177,818,256/89,148.63
6. Step 6: Final answer
   x = 215,121.86