Finding the Third Proportional to 40,435.31 and 87,742.69

Step by Step Solution

1. Step 1: Write the proportion equation
   40,435.31 : 87,742.69 = 87,742.69 : x
2. Step 2: Convert to fraction form
   40,435.31/87,742.69 = 87,742.69/x
3. Step 3: Cross multiply
   40,435.31x = 87,742.69 × 87,742.69
4. Step 4: Simplify right side
   40,435.31x = 7,698,779,209.72
5. Step 5: Solve for x
   x = 7,698,779,209.72/40,435.31
6. Step 6: Final answer
   x = 190,397.42