Finding the Third Proportional to 39,377.81 and 86,410.13

Step by Step Solution

1. Step 1: Write the proportion equation
   39,377.81 : 86,410.13 = 86,410.13 : x
2. Step 2: Convert to fraction form
   39,377.81/86,410.13 = 86,410.13/x
3. Step 3: Cross multiply
   39,377.81x = 86,410.13 × 86,410.13
4. Step 4: Simplify right side
   39,377.81x = 7,466,709,702.52
5. Step 5: Solve for x
   x = 7,466,709,702.52/39,377.81
6. Step 6: Final answer
   x = 189,617.18