Finding the Third Proportional to 12,957,440 and 28,355,320

Step by Step Solution

1. Step 1: Write the proportion equation
   12,957,440 : 28,355,320 = 28,355,320 : x
2. Step 2: Convert to fraction form
   12,957,440/28,355,320 = 28,355,320/x
3. Step 3: Cross multiply
   12,957,440x = 28,355,320 × 28,355,320
4. Step 4: Simplify right side
   12,957,440x = 804,024,172,302,400
5. Step 5: Solve for x
   x = 804,024,172,302,400/12,957,440
6. Step 6: Final answer
   x = 62,051,159.20