Finding the Third Proportional to 1,821,316 and 2,672,920

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821,316 : 2,672,920 = 2,672,920 : x
2. Step 2: Convert to fraction form
   1,821,316/2,672,920 = 2,672,920/x
3. Step 3: Cross multiply
   1,821,316x = 2,672,920 × 2,672,920
4. Step 4: Simplify right side
   1,821,316x = 7,144,501,326,400
5. Step 5: Solve for x
   x = 7,144,501,326,400/1,821,316
6. Step 6: Final answer
   x = 3,922,713.76