Finding the Third Proportional to 302,871 and 455,038.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,871 : 455,038.50 = 455,038.50 : x
2. Step 2: Convert to fraction form
   302,871/455,038.50 = 455,038.50/x
3. Step 3: Cross multiply
   302,871x = 455,038.50 × 455,038.50
4. Step 4: Simplify right side
   302,871x = 207,060,036,482.25
5. Step 5: Solve for x
   x = 207,060,036,482.25/302,871
6. Step 6: Final answer
   x = 683,657.52