Finding the Third Proportional to 21,620 and 46,390

Step by Step Solution

1. Step 1: Write the proportion equation
   21,620 : 46,390 = 46,390 : x
2. Step 2: Convert to fraction form
   21,620/46,390 = 46,390/x
3. Step 3: Cross multiply
   21,620x = 46,390 × 46,390
4. Step 4: Simplify right side
   21,620x = 2,152,032,100
5. Step 5: Solve for x
   x = 2,152,032,100/21,620
6. Step 6: Final answer
   x = 99,538.95