Finding the Third Proportional to 21,428 and 34,248

Step by Step Solution

1. Step 1: Write the proportion equation
   21,428 : 34,248 = 34,248 : x
2. Step 2: Convert to fraction form
   21,428/34,248 = 34,248/x
3. Step 3: Cross multiply
   21,428x = 34,248 × 34,248
4. Step 4: Simplify right side
   21,428x = 1,172,925,504
5. Step 5: Solve for x
   x = 1,172,925,504/21,428
6. Step 6: Final answer
   x = 54,737.98