Finding the Third Proportional to 86,572,378,658 and 186,173,602,613

Step by Step Solution

1. Step 1: Write the proportion equation
   86,572,378,658 : 186,173,602,613 = 186,173,602,613 : x
2. Step 2: Convert to fraction form
   86,572,378,658/186,173,602,613 = 186,173,602,613/x
3. Step 3: Cross multiply
   86,572,378,658x = 186,173,602,613 × 186,173,602,613
4. Step 4: Simplify right side
   86,572,378,658x = 34,660,610,309,903,238,561,792
5. Step 5: Solve for x
   x = 34,660,610,309,903,238,561,792/86,572,378,658
6. Step 6: Final answer
   x = 400,365,692,235.72