Finding the Third Proportional to 416,835 and 645,844.50

Step by Step Solution

1. Step 1: Write the proportion equation
   416,835 : 645,844.50 = 645,844.50 : x
2. Step 2: Convert to fraction form
   416,835/645,844.50 = 645,844.50/x
3. Step 3: Cross multiply
   416,835x = 645,844.50 × 645,844.50
4. Step 4: Simplify right side
   416,835x = 417,115,118,180.25
5. Step 5: Solve for x
   x = 417,115,118,180.25/416,835
6. Step 6: Final answer
   x = 1,000,672.01