Finding the Third Proportional to 620,776.50 and 949,215

Step by Step Solution

1. Step 1: Write the proportion equation
   620,776.50 : 949,215 = 949,215 : x
2. Step 2: Convert to fraction form
   620,776.50/949,215 = 949,215/x
3. Step 3: Cross multiply
   620,776.50x = 949,215 × 949,215
4. Step 4: Simplify right side
   620,776.50x = 901,009,116,225
5. Step 5: Solve for x
   x = 901,009,116,225/620,776.50
6. Step 6: Final answer
   x = 1,451,422.72