Finding the Third Proportional to 664,370 and 1,559,715

Step by Step Solution

1. Step 1: Write the proportion equation
   664,370 : 1,559,715 = 1,559,715 : x
2. Step 2: Convert to fraction form
   664,370/1,559,715 = 1,559,715/x
3. Step 3: Cross multiply
   664,370x = 1,559,715 × 1,559,715
4. Step 4: Simplify right side
   664,370x = 2,432,710,881,225
5. Step 5: Solve for x
   x = 2,432,710,881,225/664,370
6. Step 6: Final answer
   x = 3,661,680.81