Finding the Third Proportional to 39,618.19 and 87,012.38

Step by Step Solution

1. Step 1: Write the proportion equation
   39,618.19 : 87,012.38 = 87,012.38 : x
2. Step 2: Convert to fraction form
   39,618.19/87,012.38 = 87,012.38/x
3. Step 3: Cross multiply
   39,618.19x = 87,012.38 × 87,012.38
4. Step 4: Simplify right side
   39,618.19x = 7,571,153,403.14
5. Step 5: Solve for x
   x = 7,571,153,403.14/39,618.19
6. Step 6: Final answer
   x = 191,102.97