Finding the Third Proportional to 39,390.94 and 84,319.13

Step by Step Solution

1. Step 1: Write the proportion equation
   39,390.94 : 84,319.13 = 84,319.13 : x
2. Step 2: Convert to fraction form
   39,390.94/84,319.13 = 84,319.13/x
3. Step 3: Cross multiply
   39,390.94x = 84,319.13 × 84,319.13
4. Step 4: Simplify right side
   39,390.94x = 7,109,714,840.77
5. Step 5: Solve for x
   x = 7,109,714,840.77/39,390.94
6. Step 6: Final answer
   x = 180,491.13