Finding the Third Proportional to 608,637 and 890,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   608,637 : 890,419.50 = 890,419.50 : x
2. Step 2: Convert to fraction form
   608,637/890,419.50 = 890,419.50/x
3. Step 3: Cross multiply
   608,637x = 890,419.50 × 890,419.50
4. Step 4: Simplify right side
   608,637x = 792,846,885,980.25
5. Step 5: Solve for x
   x = 792,846,885,980.25/608,637
6. Step 6: Final answer
   x = 1,302,659.69