Finding the Third Proportional to 2,573,000.25 and 5,478,789

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573,000.25 : 5,478,789 = 5,478,789 : x
2. Step 2: Convert to fraction form
   2,573,000.25/5,478,789 = 5,478,789/x
3. Step 3: Cross multiply
   2,573,000.25x = 5,478,789 × 5,478,789
4. Step 4: Simplify right side
   2,573,000.25x = 30,017,128,906,521
5. Step 5: Solve for x
   x = 30,017,128,906,521/2,573,000.25
6. Step 6: Final answer
   x = 11,666,197.43