Finding the Third Proportional to 1,515,488 and 3,316,376

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515,488 : 3,316,376 = 3,316,376 : x
2. Step 2: Convert to fraction form
   1,515,488/3,316,376 = 3,316,376/x
3. Step 3: Cross multiply
   1,515,488x = 3,316,376 × 3,316,376
4. Step 4: Simplify right side
   1,515,488x = 10,998,349,773,376
5. Step 5: Solve for x
   x = 10,998,349,773,376/1,515,488
6. Step 6: Final answer
   x = 7,257,299.15