Finding the Third Proportional to 1,388,984 and 2,087,174

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,984 : 2,087,174 = 2,087,174 : x
2. Step 2: Convert to fraction form
   1,388,984/2,087,174 = 2,087,174/x
3. Step 3: Cross multiply
   1,388,984x = 2,087,174 × 2,087,174
4. Step 4: Simplify right side
   1,388,984x = 4,356,295,306,276
5. Step 5: Solve for x
   x = 4,356,295,306,276/1,388,984
6. Step 6: Final answer
   x = 3,136,317.85