Finding the Third Proportional to 312,843,468 and 426,039,404

Step by Step Solution

1. Step 1: Write the proportion equation
   312,843,468 : 426,039,404 = 426,039,404 : x
2. Step 2: Convert to fraction form
   312,843,468/426,039,404 = 426,039,404/x
3. Step 3: Cross multiply
   312,843,468x = 426,039,404 × 426,039,404
4. Step 4: Simplify right side
   312,843,468x = 181,509,573,760,675,200
5. Step 5: Solve for x
   x = 181,509,573,760,675,200/312,843,468
6. Step 6: Final answer
   x = 580,192,947.36