Finding the Third Proportional to 1,515,512 and 3,316,432

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515,512 : 3,316,432 = 3,316,432 : x
2. Step 2: Convert to fraction form
   1,515,512/3,316,432 = 3,316,432/x
3. Step 3: Cross multiply
   1,515,512x = 3,316,432 × 3,316,432
4. Step 4: Simplify right side
   1,515,512x = 10,998,721,210,624
5. Step 5: Solve for x
   x = 10,998,721,210,624/1,515,512
6. Step 6: Final answer
   x = 7,257,429.31