Finding the Third Proportional to 3,661,213 and 7,873,405

Step by Step Solution

1. Step 1: Write the proportion equation
   3,661,213 : 7,873,405 = 7,873,405 : x
2. Step 2: Convert to fraction form
   3,661,213/7,873,405 = 7,873,405/x
3. Step 3: Cross multiply
   3,661,213x = 7,873,405 × 7,873,405
4. Step 4: Simplify right side
   3,661,213x = 61,990,506,294,025
5. Step 5: Solve for x
   x = 61,990,506,294,025/3,661,213
6. Step 6: Final answer
   x = 16,931,685.29