Finding the Third Proportional to 415,911 and 621,094.50

Step by Step Solution

1. Step 1: Write the proportion equation
   415,911 : 621,094.50 = 621,094.50 : x
2. Step 2: Convert to fraction form
   415,911/621,094.50 = 621,094.50/x
3. Step 3: Cross multiply
   415,911x = 621,094.50 × 621,094.50
4. Step 4: Simplify right side
   415,911x = 385,758,377,930.25
5. Step 5: Solve for x
   x = 385,758,377,930.25/415,911
6. Step 6: Final answer
   x = 927,502.23