Finding the Third Proportional to 349,981.50 and 767,758.50

Step by Step Solution

1. Step 1: Write the proportion equation
   349,981.50 : 767,758.50 = 767,758.50 : x
2. Step 2: Convert to fraction form
   349,981.50/767,758.50 = 767,758.50/x
3. Step 3: Cross multiply
   349,981.50x = 767,758.50 × 767,758.50
4. Step 4: Simplify right side
   349,981.50x = 589,453,114,322.25
5. Step 5: Solve for x
   x = 589,453,114,322.25/349,981.50
6. Step 6: Final answer
   x = 1,684,240.78