Finding the Third Proportional to 1,243,624 and 2,657,888

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,624 : 2,657,888 = 2,657,888 : x
2. Step 2: Convert to fraction form
   1,243,624/2,657,888 = 2,657,888/x
3. Step 3: Cross multiply
   1,243,624x = 2,657,888 × 2,657,888
4. Step 4: Simplify right side
   1,243,624x = 7,064,368,620,544
5. Step 5: Solve for x
   x = 7,064,368,620,544/1,243,624
6. Step 6: Final answer
   x = 5,680,469.84