Finding the Third Proportional to 620,618 and 948,977.50

Step by Step Solution

1. Step 1: Write the proportion equation
   620,618 : 948,977.50 = 948,977.50 : x
2. Step 2: Convert to fraction form
   620,618/948,977.50 = 948,977.50/x
3. Step 3: Cross multiply
   620,618x = 948,977.50 × 948,977.50
4. Step 4: Simplify right side
   620,618x = 900,558,295,506.25
5. Step 5: Solve for x
   x = 900,558,295,506.25/620,618
6. Step 6: Final answer
   x = 1,451,066.99