Finding the Third Proportional to 21,420 and 45,432

Step by Step Solution

1. Step 1: Write the proportion equation
   21,420 : 45,432 = 45,432 : x
2. Step 2: Convert to fraction form
   21,420/45,432 = 45,432/x
3. Step 3: Cross multiply
   21,420x = 45,432 × 45,432
4. Step 4: Simplify right side
   21,420x = 2,064,066,624
5. Step 5: Solve for x
   x = 2,064,066,624/21,420
6. Step 6: Final answer
   x = 96,361.65