Finding the Third Proportional to 3,706,542 and 8,121,672

Step by Step Solution

1. Step 1: Write the proportion equation
   3,706,542 : 8,121,672 = 8,121,672 : x
2. Step 2: Convert to fraction form
   3,706,542/8,121,672 = 8,121,672/x
3. Step 3: Cross multiply
   3,706,542x = 8,121,672 × 8,121,672
4. Step 4: Simplify right side
   3,706,542x = 65,961,556,075,584
5. Step 5: Solve for x
   x = 65,961,556,075,584/3,706,542
6. Step 6: Final answer
   x = 17,795,982.37