Finding the Third Proportional to 811,064,904 and 1,665,126,408

Step by Step Solution

1. Step 1: Write the proportion equation
   811,064,904 : 1,665,126,408 = 1,665,126,408 : x
2. Step 2: Convert to fraction form
   811,064,904/1,665,126,408 = 1,665,126,408/x
3. Step 3: Cross multiply
   811,064,904x = 1,665,126,408 × 1,665,126,408
4. Step 4: Simplify right side
   811,064,904x = 2,772,645,954,618,982,400
5. Step 5: Solve for x
   x = 2,772,645,954,618,982,400/811,064,904
6. Step 6: Final answer
   x = 3,418,525,374.41