Finding the Third Proportional to 5,429,774 and 10,722,492

Step by Step Solution

1. Step 1: Write the proportion equation
   5,429,774 : 10,722,492 = 10,722,492 : x
2. Step 2: Convert to fraction form
   5,429,774/10,722,492 = 10,722,492/x
3. Step 3: Cross multiply
   5,429,774x = 10,722,492 × 10,722,492
4. Step 4: Simplify right side
   5,429,774x = 114,971,834,690,064
5. Step 5: Solve for x
   x = 114,971,834,690,064/5,429,774
6. Step 6: Final answer
   x = 21,174,331.51