Finding the Third Proportional to 4,768,912 and 7,215,000

Step by Step Solution

1. Step 1: Write the proportion equation
   4,768,912 : 7,215,000 = 7,215,000 : x
2. Step 2: Convert to fraction form
   4,768,912/7,215,000 = 7,215,000/x
3. Step 3: Cross multiply
   4,768,912x = 7,215,000 × 7,215,000
4. Step 4: Simplify right side
   4,768,912x = 52,056,225,000,000
5. Step 5: Solve for x
   x = 52,056,225,000,000/4,768,912
6. Step 6: Final answer
   x = 10,915,744.51