Finding the Third Proportional to 563,121 and 1,225,386

Step by Step Solution

1. Step 1: Write the proportion equation
   563,121 : 1,225,386 = 1,225,386 : x
2. Step 2: Convert to fraction form
   563,121/1,225,386 = 1,225,386/x
3. Step 3: Cross multiply
   563,121x = 1,225,386 × 1,225,386
4. Step 4: Simplify right side
   563,121x = 1,501,570,848,996
5. Step 5: Solve for x
   x = 1,501,570,848,996/563,121
6. Step 6: Final answer
   x = 2,666,515.45