Finding the Third Proportional to 4,630,118 and 9,971,380

Step by Step Solution

1. Step 1: Write the proportion equation
   4,630,118 : 9,971,380 = 9,971,380 : x
2. Step 2: Convert to fraction form
   4,630,118/9,971,380 = 9,971,380/x
3. Step 3: Cross multiply
   4,630,118x = 9,971,380 × 9,971,380
4. Step 4: Simplify right side
   4,630,118x = 99,428,419,104,400
5. Step 5: Solve for x
   x = 99,428,419,104,400/4,630,118
6. Step 6: Final answer
   x = 21,474,273.25