Finding the Third Proportional to 556,878 and 848,374.50

Step by Step Solution

1. Step 1: Write the proportion equation
   556,878 : 848,374.50 = 848,374.50 : x
2. Step 2: Convert to fraction form
   556,878/848,374.50 = 848,374.50/x
3. Step 3: Cross multiply
   556,878x = 848,374.50 × 848,374.50
4. Step 4: Simplify right side
   556,878x = 719,739,292,250.25
5. Step 5: Solve for x
   x = 719,739,292,250.25/556,878
6. Step 6: Final answer
   x = 1,292,454.17