Finding the Third Proportional to 28,904 and 42,315

Step by Step Solution

1. Step 1: Write the proportion equation
   28,904 : 42,315 = 42,315 : x
2. Step 2: Convert to fraction form
   28,904/42,315 = 42,315/x
3. Step 3: Cross multiply
   28,904x = 42,315 × 42,315
4. Step 4: Simplify right side
   28,904x = 1,790,559,225
5. Step 5: Solve for x
   x = 1,790,559,225/28,904
6. Step 6: Final answer
   x = 61,948.49