Finding the Third Proportional to 39,388.78 and 59,903.30

Step by Step Solution

1. Step 1: Write the proportion equation
   39,388.78 : 59,903.30 = 59,903.30 : x
2. Step 2: Convert to fraction form
   39,388.78/59,903.30 = 59,903.30/x
3. Step 3: Cross multiply
   39,388.78x = 59,903.30 × 59,903.30
4. Step 4: Simplify right side
   39,388.78x = 3,588,404,976.49
5. Step 5: Solve for x
   x = 3,588,404,976.49/39,388.78
6. Step 6: Final answer
   x = 91,102.21