Finding the Third Proportional to 455,058 and 612,598.50

Step by Step Solution

1. Step 1: Write the proportion equation
   455,058 : 612,598.50 = 612,598.50 : x
2. Step 2: Convert to fraction form
   455,058/612,598.50 = 612,598.50/x
3. Step 3: Cross multiply
   455,058x = 612,598.50 × 612,598.50
4. Step 4: Simplify right side
   455,058x = 375,276,922,202.25
5. Step 5: Solve for x
   x = 375,276,922,202.25/455,058
6. Step 6: Final answer
   x = 824,679.32