Finding the Third Proportional to 334,359 and 651,978

Step by Step Solution

1. Step 1: Write the proportion equation
   334,359 : 651,978 = 651,978 : x
2. Step 2: Convert to fraction form
   334,359/651,978 = 651,978/x
3. Step 3: Cross multiply
   334,359x = 651,978 × 651,978
4. Step 4: Simplify right side
   334,359x = 425,075,312,484
5. Step 5: Solve for x
   x = 425,075,312,484/334,359
6. Step 6: Final answer
   x = 1,271,314.10