Finding the Third Proportional to 9,140,900,403 and 12,872,402,054

Step by Step Solution

1. Step 1: Write the proportion equation
   9,140,900,403 : 12,872,402,054 = 12,872,402,054 : x
2. Step 2: Convert to fraction form
   9,140,900,403/12,872,402,054 = 12,872,402,054/x
3. Step 3: Cross multiply
   9,140,900,403x = 12,872,402,054 × 12,872,402,054
4. Step 4: Simplify right side
   9,140,900,403x = 165,698,734,639,823,421,440
5. Step 5: Solve for x
   x = 165,698,734,639,823,421,440/9,140,900,403
6. Step 6: Final answer
   x = 18,127,178,651.40