Finding the Third Proportional to 460,999 and 621,460.50

Step by Step Solution

1. Step 1: Write the proportion equation
   460,999 : 621,460.50 = 621,460.50 : x
2. Step 2: Convert to fraction form
   460,999/621,460.50 = 621,460.50/x
3. Step 3: Cross multiply
   460,999x = 621,460.50 × 621,460.50
4. Step 4: Simplify right side
   460,999x = 386,213,153,060.25
5. Step 5: Solve for x
   x = 386,213,153,060.25/460,999
6. Step 6: Final answer
   x = 837,774.38