Finding the Third Proportional to 643,133 and 1,371,699

Step by Step Solution

1. Step 1: Write the proportion equation
   643,133 : 1,371,699 = 1,371,699 : x
2. Step 2: Convert to fraction form
   643,133/1,371,699 = 1,371,699/x
3. Step 3: Cross multiply
   643,133x = 1,371,699 × 1,371,699
4. Step 4: Simplify right side
   643,133x = 1,881,558,146,601
5. Step 5: Solve for x
   x = 1,881,558,146,601/643,133
6. Step 6: Final answer
   x = 2,925,612.82