Finding the Third Proportional to 65,643 and 92,890.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,643 : 92,890.50 = 92,890.50 : x
2. Step 2: Convert to fraction form
   65,643/92,890.50 = 92,890.50/x
3. Step 3: Cross multiply
   65,643x = 92,890.50 × 92,890.50
4. Step 4: Simplify right side
   65,643x = 8,628,644,990.25
5. Step 5: Solve for x
   x = 8,628,644,990.25/65,643
6. Step 6: Final answer
   x = 131,448.06