Finding the Third Proportional to 559,395 and 828,601.50

Step by Step Solution

1. Step 1: Write the proportion equation
   559,395 : 828,601.50 = 828,601.50 : x
2. Step 2: Convert to fraction form
   559,395/828,601.50 = 828,601.50/x
3. Step 3: Cross multiply
   559,395x = 828,601.50 × 828,601.50
4. Step 4: Simplify right side
   559,395x = 686,580,445,802.25
5. Step 5: Solve for x
   x = 686,580,445,802.25/559,395
6. Step 6: Final answer
   x = 1,227,362.50