Finding the Third Proportional to 2,115,388 and 4,567,392

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115,388 : 4,567,392 = 4,567,392 : x
2. Step 2: Convert to fraction form
   2,115,388/4,567,392 = 4,567,392/x
3. Step 3: Cross multiply
   2,115,388x = 4,567,392 × 4,567,392
4. Step 4: Simplify right side
   2,115,388x = 20,861,069,681,664
5. Step 5: Solve for x
   x = 20,861,069,681,664/2,115,388
6. Step 6: Final answer
   x = 9,861,580.80