Finding the Third Proportional to 2,105,428 and 4,630,664

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,428 : 4,630,664 = 4,630,664 : x
2. Step 2: Convert to fraction form
   2,105,428/4,630,664 = 4,630,664/x
3. Step 3: Cross multiply
   2,105,428x = 4,630,664 × 4,630,664
4. Step 4: Simplify right side
   2,105,428x = 21,443,049,080,896
5. Step 5: Solve for x
   x = 21,443,049,080,896/2,105,428
6. Step 6: Final answer
   x = 10,184,650.86