Finding the Third Proportional to 1,390,998 and 2,931,444

Step by Step Solution

1. Step 1: Write the proportion equation
   1,390,998 : 2,931,444 = 2,931,444 : x
2. Step 2: Convert to fraction form
   1,390,998/2,931,444 = 2,931,444/x
3. Step 3: Cross multiply
   1,390,998x = 2,931,444 × 2,931,444
4. Step 4: Simplify right side
   1,390,998x = 8,593,363,925,136
5. Step 5: Solve for x
   x = 8,593,363,925,136/1,390,998
6. Step 6: Final answer
   x = 6,177,840.60