Finding the Third Proportional to 478,408 and 740,764.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,408 : 740,764.50 = 740,764.50 : x
2. Step 2: Convert to fraction form
   478,408/740,764.50 = 740,764.50/x
3. Step 3: Cross multiply
   478,408x = 740,764.50 × 740,764.50
4. Step 4: Simplify right side
   478,408x = 548,732,044,460.25
5. Step 5: Solve for x
   x = 548,732,044,460.25/478,408
6. Step 6: Final answer
   x = 1,146,995.96