Finding the Third Proportional to 5,418,450 and 7,430,220

Step by Step Solution

1. Step 1: Write the proportion equation
   5,418,450 : 7,430,220 = 7,430,220 : x
2. Step 2: Convert to fraction form
   5,418,450/7,430,220 = 7,430,220/x
3. Step 3: Cross multiply
   5,418,450x = 7,430,220 × 7,430,220
4. Step 4: Simplify right side
   5,418,450x = 55,208,169,248,400
5. Step 5: Solve for x
   x = 55,208,169,248,400/5,418,450
6. Step 6: Final answer
   x = 10,188,922.89