Finding the Third Proportional to 3,720,207 and 7,971,855

Step by Step Solution

1. Step 1: Write the proportion equation
   3,720,207 : 7,971,855 = 7,971,855 : x
2. Step 2: Convert to fraction form
   3,720,207/7,971,855 = 7,971,855/x
3. Step 3: Cross multiply
   3,720,207x = 7,971,855 × 7,971,855
4. Step 4: Simplify right side
   3,720,207x = 63,550,472,141,025
5. Step 5: Solve for x
   x = 63,550,472,141,025/3,720,207
6. Step 6: Final answer
   x = 17,082,509.69