Finding the Third Proportional to 407,886 and 619,753.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,886 : 619,753.50 = 619,753.50 : x
2. Step 2: Convert to fraction form
   407,886/619,753.50 = 619,753.50/x
3. Step 3: Cross multiply
   407,886x = 619,753.50 × 619,753.50
4. Step 4: Simplify right side
   407,886x = 384,094,400,762.25
5. Step 5: Solve for x
   x = 384,094,400,762.25/407,886
6. Step 6: Final answer
   x = 941,670.96