Finding the Third Proportional to 3,292,312 and 7,187,912

Step by Step Solution

1. Step 1: Write the proportion equation
   3,292,312 : 7,187,912 = 7,187,912 : x
2. Step 2: Convert to fraction form
   3,292,312/7,187,912 = 7,187,912/x
3. Step 3: Cross multiply
   3,292,312x = 7,187,912 × 7,187,912
4. Step 4: Simplify right side
   3,292,312x = 51,666,078,919,744
5. Step 5: Solve for x
   x = 51,666,078,919,744/3,292,312
6. Step 6: Final answer
   x = 15,692,947.36