Finding the Third Proportional to 3,664,738 and 7,980,072

Step by Step Solution

1. Step 1: Write the proportion equation
   3,664,738 : 7,980,072 = 7,980,072 : x
2. Step 2: Convert to fraction form
   3,664,738/7,980,072 = 7,980,072/x
3. Step 3: Cross multiply
   3,664,738x = 7,980,072 × 7,980,072
4. Step 4: Simplify right side
   3,664,738x = 63,681,549,125,184
5. Step 5: Solve for x
   x = 63,681,549,125,184/3,664,738
6. Step 6: Final answer
   x = 17,376,835.43