Finding the Third Proportional to 334,139.50 and 788,510.50

Step by Step Solution

1. Step 1: Write the proportion equation
   334,139.50 : 788,510.50 = 788,510.50 : x
2. Step 2: Convert to fraction form
   334,139.50/788,510.50 = 788,510.50/x
3. Step 3: Cross multiply
   334,139.50x = 788,510.50 × 788,510.50
4. Step 4: Simplify right side
   334,139.50x = 621,748,808,610.25
5. Step 5: Solve for x
   x = 621,748,808,610.25/334,139.50
6. Step 6: Final answer
   x = 1,860,746.21