Finding the Third Proportional to 664,364 and 1,559,700

Step by Step Solution

1. Step 1: Write the proportion equation
   664,364 : 1,559,700 = 1,559,700 : x
2. Step 2: Convert to fraction form
   664,364/1,559,700 = 1,559,700/x
3. Step 3: Cross multiply
   664,364x = 1,559,700 × 1,559,700
4. Step 4: Simplify right side
   664,364x = 2,432,664,090,000
5. Step 5: Solve for x
   x = 2,432,664,090,000/664,364
6. Step 6: Final answer
   x = 3,661,643.45