Finding the Third Proportional to 12,316 and 28,915

Step by Step Solution

1. Step 1: Write the proportion equation
   12,316 : 28,915 = 28,915 : x
2. Step 2: Convert to fraction form
   12,316/28,915 = 28,915/x
3. Step 3: Cross multiply
   12,316x = 28,915 × 28,915
4. Step 4: Simplify right side
   12,316x = 836,077,225
5. Step 5: Solve for x
   x = 836,077,225/12,316
6. Step 6: Final answer
   x = 67,885.45