Finding the Third Proportional to 305,910 and 656,092.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,910 : 656,092.50 = 656,092.50 : x
2. Step 2: Convert to fraction form
   305,910/656,092.50 = 656,092.50/x
3. Step 3: Cross multiply
   305,910x = 656,092.50 × 656,092.50
4. Step 4: Simplify right side
   305,910x = 430,457,368,556.25
5. Step 5: Solve for x
   x = 430,457,368,556.25/305,910
6. Step 6: Final answer
   x = 1,407,137.29