Finding the Third Proportional to 349,872 and 556,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   349,872 : 556,987.50 = 556,987.50 : x
2. Step 2: Convert to fraction form
   349,872/556,987.50 = 556,987.50/x
3. Step 3: Cross multiply
   349,872x = 556,987.50 × 556,987.50
4. Step 4: Simplify right side
   349,872x = 310,235,075,156.25
5. Step 5: Solve for x
   x = 310,235,075,156.25/349,872
6. Step 6: Final answer
   x = 886,710.21