Finding the Third Proportional to 31,191,894 and 69,555,738

Step by Step Solution

1. Step 1: Write the proportion equation
   31,191,894 : 69,555,738 = 69,555,738 : x
2. Step 2: Convert to fraction form
   31,191,894/69,555,738 = 69,555,738/x
3. Step 3: Cross multiply
   31,191,894x = 69,555,738 × 69,555,738
4. Step 4: Simplify right side
   31,191,894x = 4,838,000,688,724,644
5. Step 5: Solve for x
   x = 4,838,000,688,724,644/31,191,894
6. Step 6: Final answer
   x = 155,104,421.96