Finding the Third Proportional to 303,210 and 470,803.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,210 : 470,803.50 = 470,803.50 : x
2. Step 2: Convert to fraction form
   303,210/470,803.50 = 470,803.50/x
3. Step 3: Cross multiply
   303,210x = 470,803.50 × 470,803.50
4. Step 4: Simplify right side
   303,210x = 221,655,935,612.25
5. Step 5: Solve for x
   x = 221,655,935,612.25/303,210
6. Step 6: Final answer
   x = 731,031.09