Finding the Third Proportional to 20,706,642 and 31,490,164

Step by Step Solution

1. Step 1: Write the proportion equation
   20,706,642 : 31,490,164 = 31,490,164 : x
2. Step 2: Convert to fraction form
   20,706,642/31,490,164 = 31,490,164/x
3. Step 3: Cross multiply
   20,706,642x = 31,490,164 × 31,490,164
4. Step 4: Simplify right side
   20,706,642x = 991,630,428,746,896
5. Step 5: Solve for x
   x = 991,630,428,746,896/20,706,642
6. Step 6: Final answer
   x = 47,889,485.35