Finding the Third Proportional to 4,287,456 and 8,927,730

Step by Step Solution

1. Step 1: Write the proportion equation
   4,287,456 : 8,927,730 = 8,927,730 : x
2. Step 2: Convert to fraction form
   4,287,456/8,927,730 = 8,927,730/x
3. Step 3: Cross multiply
   4,287,456x = 8,927,730 × 8,927,730
4. Step 4: Simplify right side
   4,287,456x = 79,704,362,952,900
5. Step 5: Solve for x
   x = 79,704,362,952,900/4,287,456
6. Step 6: Final answer
   x = 18,590,129.66