Finding the Third Proportional to 3,930,912 and 8,573,328

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930,912 : 8,573,328 = 8,573,328 : x
2. Step 2: Convert to fraction form
   3,930,912/8,573,328 = 8,573,328/x
3. Step 3: Cross multiply
   3,930,912x = 8,573,328 × 8,573,328
4. Step 4: Simplify right side
   3,930,912x = 73,501,952,995,584
5. Step 5: Solve for x
   x = 73,501,952,995,584/3,930,912
6. Step 6: Final answer
   x = 18,698,447.84