Finding the Third Proportional to 3,590,603 and 7,856,854

Step by Step Solution

1. Step 1: Write the proportion equation
   3,590,603 : 7,856,854 = 7,856,854 : x
2. Step 2: Convert to fraction form
   3,590,603/7,856,854 = 7,856,854/x
3. Step 3: Cross multiply
   3,590,603x = 7,856,854 × 7,856,854
4. Step 4: Simplify right side
   3,590,603x = 61,730,154,777,316
5. Step 5: Solve for x
   x = 61,730,154,777,316/3,590,603
6. Step 6: Final answer
   x = 17,192,141.48