Finding the Third Proportional to 31,900,756 and 69,977,061

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900,756 : 69,977,061 = 69,977,061 : x
2. Step 2: Convert to fraction form
   31,900,756/69,977,061 = 69,977,061/x
3. Step 3: Cross multiply
   31,900,756x = 69,977,061 × 69,977,061
4. Step 4: Simplify right side
   31,900,756x = 4,896,789,066,197,721
5. Step 5: Solve for x
   x = 4,896,789,066,197,721/31,900,756
6. Step 6: Final answer
   x = 153,500,721.62