Finding the Third Proportional to 148,816.13 and 212,724

Step by Step Solution

1. Step 1: Write the proportion equation
   148,816.13 : 212,724 = 212,724 : x
2. Step 2: Convert to fraction form
   148,816.13/212,724 = 212,724/x
3. Step 3: Cross multiply
   148,816.13x = 212,724 × 212,724
4. Step 4: Simplify right side
   148,816.13x = 45,251,500,176
5. Step 5: Solve for x
   x = 45,251,500,176/148,816.13
6. Step 6: Final answer
   x = 304,076.59