Finding the Third Proportional to 299,151 and 447,709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   299,151 : 447,709.50 = 447,709.50 : x
2. Step 2: Convert to fraction form
   299,151/447,709.50 = 447,709.50/x
3. Step 3: Cross multiply
   299,151x = 447,709.50 × 447,709.50
4. Step 4: Simplify right side
   299,151x = 200,443,796,390.25
5. Step 5: Solve for x
   x = 200,443,796,390.25/299,151
6. Step 6: Final answer
   x = 670,042.21