Finding the Third Proportional to 308,059.50 and 661,953

Step by Step Solution

1. Step 1: Write the proportion equation
   308,059.50 : 661,953 = 661,953 : x
2. Step 2: Convert to fraction form
   308,059.50/661,953 = 661,953/x
3. Step 3: Cross multiply
   308,059.50x = 661,953 × 661,953
4. Step 4: Simplify right side
   308,059.50x = 438,181,774,209
5. Step 5: Solve for x
   x = 438,181,774,209/308,059.50
6. Step 6: Final answer
   x = 1,422,393.32