Finding the Third Proportional to 1,987,818 and 4,366,140

Step by Step Solution

1. Step 1: Write the proportion equation
   1,987,818 : 4,366,140 = 4,366,140 : x
2. Step 2: Convert to fraction form
   1,987,818/4,366,140 = 4,366,140/x
3. Step 3: Cross multiply
   1,987,818x = 4,366,140 × 4,366,140
4. Step 4: Simplify right side
   1,987,818x = 19,063,178,499,600
5. Step 5: Solve for x
   x = 19,063,178,499,600/1,987,818
6. Step 6: Final answer
   x = 9,590,001.95