Finding the Third Proportional to 1,209,624 and 1,991,773

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,624 : 1,991,773 = 1,991,773 : x
2. Step 2: Convert to fraction form
   1,209,624/1,991,773 = 1,991,773/x
3. Step 3: Cross multiply
   1,209,624x = 1,991,773 × 1,991,773
4. Step 4: Simplify right side
   1,209,624x = 3,967,159,683,529
5. Step 5: Solve for x
   x = 3,967,159,683,529/1,209,624
6. Step 6: Final answer
   x = 3,279,663.50