Finding the Third Proportional to 90,461.81 and 140,590.69

Step by Step Solution

1. Step 1: Write the proportion equation
   90,461.81 : 140,590.69 = 140,590.69 : x
2. Step 2: Convert to fraction form
   90,461.81/140,590.69 = 140,590.69/x
3. Step 3: Cross multiply
   90,461.81x = 140,590.69 × 140,590.69
4. Step 4: Simplify right side
   90,461.81x = 19,765,741,411.72
5. Step 5: Solve for x
   x = 19,765,741,411.72/90,461.81
6. Step 6: Final answer
   x = 218,498.18