Finding the Third Proportional to 307,562 and 661,106

Step by Step Solution

1. Step 1: Write the proportion equation
   307,562 : 661,106 = 661,106 : x
2. Step 2: Convert to fraction form
   307,562/661,106 = 661,106/x
3. Step 3: Cross multiply
   307,562x = 661,106 × 661,106
4. Step 4: Simplify right side
   307,562x = 437,061,143,236
5. Step 5: Solve for x
   x = 437,061,143,236/307,562
6. Step 6: Final answer
   x = 1,421,050.53