Finding the Third Proportional to 291,069 and 626,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   291,069 : 626,401.50 = 626,401.50 : x
2. Step 2: Convert to fraction form
   291,069/626,401.50 = 626,401.50/x
3. Step 3: Cross multiply
   291,069x = 626,401.50 × 626,401.50
4. Step 4: Simplify right side
   291,069x = 392,378,839,202.25
5. Step 5: Solve for x
   x = 392,378,839,202.25/291,069
6. Step 6: Final answer
   x = 1,348,061.25