Finding the Third Proportional to 91,921.50 and 142,047

Step by Step Solution

1. Step 1: Write the proportion equation
   91,921.50 : 142,047 = 142,047 : x
2. Step 2: Convert to fraction form
   91,921.50/142,047 = 142,047/x
3. Step 3: Cross multiply
   91,921.50x = 142,047 × 142,047
4. Step 4: Simplify right side
   91,921.50x = 20,177,350,209
5. Step 5: Solve for x
   x = 20,177,350,209/91,921.50
6. Step 6: Final answer
   x = 219,506.32