Finding the Third Proportional to 301,347 and 455,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,347 : 455,911.50 = 455,911.50 : x
2. Step 2: Convert to fraction form
   301,347/455,911.50 = 455,911.50/x
3. Step 3: Cross multiply
   301,347x = 455,911.50 × 455,911.50
4. Step 4: Simplify right side
   301,347x = 207,855,295,832.25
5. Step 5: Solve for x
   x = 207,855,295,832.25/301,347
6. Step 6: Final answer
   x = 689,753.99