Finding the Third Proportional to 307,550 and 661,084

Step by Step Solution

1. Step 1: Write the proportion equation
   307,550 : 661,084 = 661,084 : x
2. Step 2: Convert to fraction form
   307,550/661,084 = 661,084/x
3. Step 3: Cross multiply
   307,550x = 661,084 × 661,084
4. Step 4: Simplify right side
   307,550x = 437,032,055,056
5. Step 5: Solve for x
   x = 437,032,055,056/307,550
6. Step 6: Final answer
   x = 1,421,011.40