Finding the Third Proportional to 28,213 and 61,287

Step by Step Solution

1. Step 1: Write the proportion equation
   28,213 : 61,287 = 61,287 : x
2. Step 2: Convert to fraction form
   28,213/61,287 = 61,287/x
3. Step 3: Cross multiply
   28,213x = 61,287 × 61,287
4. Step 4: Simplify right side
   28,213x = 3,756,096,369
5. Step 5: Solve for x
   x = 3,756,096,369/28,213
6. Step 6: Final answer
   x = 133,133.53