Finding the Third Proportional to 21,990 and 46,140

Step by Step Solution

1. Step 1: Write the proportion equation
   21,990 : 46,140 = 46,140 : x
2. Step 2: Convert to fraction form
   21,990/46,140 = 46,140/x
3. Step 3: Cross multiply
   21,990x = 46,140 × 46,140
4. Step 4: Simplify right side
   21,990x = 2,128,899,600
5. Step 5: Solve for x
   x = 2,128,899,600/21,990
6. Step 6: Final answer
   x = 96,812.17