Finding the Third Proportional to 58,699.69 and 89,317.69

Step by Step Solution

1. Step 1: Write the proportion equation
   58,699.69 : 89,317.69 = 89,317.69 : x
2. Step 2: Convert to fraction form
   58,699.69/89,317.69 = 89,317.69/x
3. Step 3: Cross multiply
   58,699.69x = 89,317.69 × 89,317.69
4. Step 4: Simplify right side
   58,699.69x = 7,977,649,300.35
5. Step 5: Solve for x
   x = 7,977,649,300.35/58,699.69
6. Step 6: Final answer
   x = 135,906.16