Finding the Third Proportional to 5,420,490 and 10,703,892

Step by Step Solution

1. Step 1: Write the proportion equation
   5,420,490 : 10,703,892 = 10,703,892 : x
2. Step 2: Convert to fraction form
   5,420,490/10,703,892 = 10,703,892/x
3. Step 3: Cross multiply
   5,420,490x = 10,703,892 × 10,703,892
4. Step 4: Simplify right side
   5,420,490x = 114,573,303,947,664
5. Step 5: Solve for x
   x = 114,573,303,947,664/5,420,490
6. Step 6: Final answer
   x = 21,137,075.05