Finding the Third Proportional to 553,380.50 and 846,129

Step by Step Solution

1. Step 1: Write the proportion equation
   553,380.50 : 846,129 = 846,129 : x
2. Step 2: Convert to fraction form
   553,380.50/846,129 = 846,129/x
3. Step 3: Cross multiply
   553,380.50x = 846,129 × 846,129
4. Step 4: Simplify right side
   553,380.50x = 715,934,284,641
5. Step 5: Solve for x
   x = 715,934,284,641/553,380.50
6. Step 6: Final answer
   x = 1,293,746.86