Finding the Third Proportional to 65,992.50 and 89,658

Step by Step Solution

1. Step 1: Write the proportion equation
   65,992.50 : 89,658 = 89,658 : x
2. Step 2: Convert to fraction form
   65,992.50/89,658 = 89,658/x
3. Step 3: Cross multiply
   65,992.50x = 89,658 × 89,658
4. Step 4: Simplify right side
   65,992.50x = 8,038,556,964
5. Step 5: Solve for x
   x = 8,038,556,964/65,992.50
6. Step 6: Final answer
   x = 121,810.16