Finding the Third Proportional to 91,921.50 and 140,555.25

Step by Step Solution

1. Step 1: Write the proportion equation
   91,921.50 : 140,555.25 = 140,555.25 : x
2. Step 2: Convert to fraction form
   91,921.50/140,555.25 = 140,555.25/x
3. Step 3: Cross multiply
   91,921.50x = 140,555.25 × 140,555.25
4. Step 4: Simplify right side
   91,921.50x = 19,755,778,302.56
5. Step 5: Solve for x
   x = 19,755,778,302.56/91,921.50
6. Step 6: Final answer
   x = 214,920.10