Finding the Third Proportional to 616,834 and 920,134.50

Step by Step Solution

1. Step 1: Write the proportion equation
   616,834 : 920,134.50 = 920,134.50 : x
2. Step 2: Convert to fraction form
   616,834/920,134.50 = 920,134.50/x
3. Step 3: Cross multiply
   616,834x = 920,134.50 × 920,134.50
4. Step 4: Simplify right side
   616,834x = 846,647,498,090.25
5. Step 5: Solve for x
   x = 846,647,498,090.25/616,834
6. Step 6: Final answer
   x = 1,372,569.44