Finding the Third Proportional to 2,890,280 and 4,066,560

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890,280 : 4,066,560 = 4,066,560 : x
2. Step 2: Convert to fraction form
   2,890,280/4,066,560 = 4,066,560/x
3. Step 3: Cross multiply
   2,890,280x = 4,066,560 × 4,066,560
4. Step 4: Simplify right side
   2,890,280x = 16,536,910,233,600
5. Step 5: Solve for x
   x = 16,536,910,233,600/2,890,280
6. Step 6: Final answer
   x = 5,721,559.93