Finding the Third Proportional to 1,388,047 and 3,213,076

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,047 : 3,213,076 = 3,213,076 : x
2. Step 2: Convert to fraction form
   1,388,047/3,213,076 = 3,213,076/x
3. Step 3: Cross multiply
   1,388,047x = 3,213,076 × 3,213,076
4. Step 4: Simplify right side
   1,388,047x = 10,323,857,381,776
5. Step 5: Solve for x
   x = 10,323,857,381,776/1,388,047
6. Step 6: Final answer
   x = 7,437,685.74