Finding the Third Proportional to 58,796.51 and 86,809.85

Step by Step Solution

1. Step 1: Write the proportion equation
   58,796.51 : 86,809.85 = 86,809.85 : x
2. Step 2: Convert to fraction form
   58,796.51/86,809.85 = 86,809.85/x
3. Step 3: Cross multiply
   58,796.51x = 86,809.85 × 86,809.85
4. Step 4: Simplify right side
   58,796.51x = 7,535,950,328.30
5. Step 5: Solve for x
   x = 7,535,950,328.30/58,796.51
6. Step 6: Final answer
   x = 128,170.03