Finding the Third Proportional to 3,316,140 and 7,139,664

Step by Step Solution

1. Step 1: Write the proportion equation
   3,316,140 : 7,139,664 = 7,139,664 : x
2. Step 2: Convert to fraction form
   3,316,140/7,139,664 = 7,139,664/x
3. Step 3: Cross multiply
   3,316,140x = 7,139,664 × 7,139,664
4. Step 4: Simplify right side
   3,316,140x = 50,974,802,032,896
5. Step 5: Solve for x
   x = 50,974,802,032,896/3,316,140
6. Step 6: Final answer
   x = 15,371,727.98