Finding the Third Proportional to 3,689,963 and 8,007,146

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689,963 : 8,007,146 = 8,007,146 : x
2. Step 2: Convert to fraction form
   3,689,963/8,007,146 = 8,007,146/x
3. Step 3: Cross multiply
   3,689,963x = 8,007,146 × 8,007,146
4. Step 4: Simplify right side
   3,689,963x = 64,114,387,065,316
5. Step 5: Solve for x
   x = 64,114,387,065,316/3,689,963
6. Step 6: Final answer
   x = 17,375,346.87