Finding the Third Proportional to 1,521,420 and 2,126,926

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521,420 : 2,126,926 = 2,126,926 : x
2. Step 2: Convert to fraction form
   1,521,420/2,126,926 = 2,126,926/x
3. Step 3: Cross multiply
   1,521,420x = 2,126,926 × 2,126,926
4. Step 4: Simplify right side
   1,521,420x = 4,523,814,209,476
5. Step 5: Solve for x
   x = 4,523,814,209,476/1,521,420
6. Step 6: Final answer
   x = 2,973,415.76