Finding the Third Proportional to 65,993.63 and 89,663.63

Step by Step Solution

1. Step 1: Write the proportion equation
   65,993.63 : 89,663.63 = 89,663.63 : x
2. Step 2: Convert to fraction form
   65,993.63/89,663.63 = 89,663.63/x
3. Step 3: Cross multiply
   65,993.63x = 89,663.63 × 89,663.63
4. Step 4: Simplify right side
   65,993.63x = 8,039,565,648.14
5. Step 5: Solve for x
   x = 8,039,565,648.14/65,993.63
6. Step 6: Final answer
   x = 121,823.37