Finding the Third Proportional to 2,757,880,128 and 3,869,851,766.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,757,880,128 : 3,869,851,766.25 = 3,869,851,766.25 : x
2. Step 2: Convert to fraction form
   2,757,880,128/3,869,851,766.25 = 3,869,851,766.25/x
3. Step 3: Cross multiply
   2,757,880,128x = 3,869,851,766.25 × 3,869,851,766.25
4. Step 4: Simplify right side
   2,757,880,128x = 14,975,752,692,748,244,992
5. Step 5: Solve for x
   x = 14,975,752,692,748,244,992/2,757,880,128
6. Step 6: Final answer
   x = 5,430,168,099.30