Finding the Third Proportional to 786,463 and 1,720,109

Step by Step Solution

1. Step 1: Write the proportion equation
   786,463 : 1,720,109 = 1,720,109 : x
2. Step 2: Convert to fraction form
   786,463/1,720,109 = 1,720,109/x
3. Step 3: Cross multiply
   786,463x = 1,720,109 × 1,720,109
4. Step 4: Simplify right side
   786,463x = 2,958,774,971,881
5. Step 5: Solve for x
   x = 2,958,774,971,881/786,463
6. Step 6: Final answer
   x = 3,762,128.63